package com.ldx.cloud.controller;

import com.ldx.cloud.entity.CommonResult;
import com.ldx.cloud.entity.PayMent;
import com.ldx.cloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author lidexin
 * @create 2021-03-20 21:52
 */
@RestController
@Slf4j
public class OrderController {

//    public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";


    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;


    @GetMapping("/consumer/payment/create")
    public CommonResult<PayMent> create(PayMent payMent) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create",payMent,CommonResult.class);
    }


    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<PayMent> getPayment(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<PayMent> getPaymentForEntity(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()) {
            log.info(entity.getStatusCode() + "\t" + entity.getHeaders());
            return entity.getBody();
        }else {
            return new CommonResult<>(444,"操作失败！");
        }
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if (instances == null || instances.size() <= 0) {
            return null;
        }
        ServiceInstance serviceInstance = loadBalancer.instances(instances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri +"/payment/lb",String.class);

    }

    //zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin(){
        String result = restTemplate.getForObject("http://localhost:8001" + "/payment/zipkin/", String.class);
        return result;
    }
}
